Key takeaways
Oxybutynin ER (Ditropan XL) and Solifenacin (Vesicare) are both medications used to treat overactive bladder (OAB), but they have some differences. Oxybutynin ER is available in both short-acting and long-acting forms, as well as in a patch and gel, while Solifenacin is only available as a once-daily tablet or liquid. Oxybutynin ER can be used in children as young as 5 years old, whereas Solifenacin can be used in children as young as 2 years old. Oxybutynin ER tends to cause more side effects like dry mouth, dizziness, and drowsiness compared to Solifenacin, which has milder side effects. Both medications can cause dry mouth and should be used carefully in older adults due to the risk of falls. Additionally, Solifenacin has a rare risk of causing a serious heart rhythm problem called QT prolongation, which is not a noted risk for Oxybutynin ER.
